CN210467527U - Magnetic assembly and power module with same - Google Patents
Magnetic assembly and power module with same Download PDFInfo
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- CN210467527U CN210467527U CN201921759743.1U CN201921759743U CN210467527U CN 210467527 U CN210467527 U CN 210467527U CN 201921759743 U CN201921759743 U CN 201921759743U CN 210467527 U CN210467527 U CN 210467527U
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Abstract
The utility model provides a magnetic component and have this magnetic component's power module. The magnetic assembly includes: a magnetic core including at least one winding post; the winding is wound on the periphery of the winding post; the winding structure comprises a winding post, a winding and a winding, wherein the outer wall of the winding post is provided with at least one first groove which is communicated along the axial direction, and the inner wall of the first groove and the inner wall of the winding opposite to the first groove are enclosed to form an air channel for air circulation. Outside air current takes away the inside heat with the magnetic core inside of winding simultaneously when circulating in first recess for the winding both can dispel the heat through the outside also can dispel the heat through inside, strengthens the radiating effect of winding and magnetic core simultaneously, reduces the temperature of winding and magnetic core, has reduced magnetic component's bulk temperature promptly, and then guarantees power module's reliable, high-efficient operation.
Description
Technical Field
The utility model relates to a power supply unit technical field especially relates to a magnetic component and have this magnetic component's power module.
Background
In an air-cooled power supply system, the heat dissipation of a magnetic component is mainly distributed layer by layer from inside to outside, and then the heat is dissipated from the surface layer by forced air blowing. However, as the magnetic component is tightly wrapped by the winding, the insulating tape, the safety tape, the iron core and the like, and the internal heat is more and more difficult to be led out along with the increase of the power, the local temperature is overhigh, and the magnetic component is seriously even possibly burnt.
In the existing air cooling heat dissipation, more heat treatment modes exist, such as increasing a heat dissipation fin with heat dissipation teeth to increase the heat dissipation area of a magnetic part, and the like, but the volume and the weight of the magnetic part are obviously increased, and the scheme is not optimized; or corresponding heat-conducting fins are inserted into the winding so as to transfer heat of the coil to the heat-conducting fins and then to the outside, and the heat dissipation capability is enhanced.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a magnetic component and a power module having the same, which can ensure a heat dissipation effect without increasing the size of the magnetic component, in order to solve the problems of the increase in size and the like caused by the heat dissipation of the magnetic component and the electromagnetic interference.
The above purpose is realized by the following technical scheme:
a magnetic assembly, comprising:
a magnetic core including at least one winding post; and
the winding is wound on the periphery of the winding post;
the winding structure comprises a winding post, a winding and a winding, wherein the outer wall of the winding post is provided with at least one first groove which is communicated along the axial direction, and the inner wall of the first groove and the inner wall of the winding opposite to the first groove are enclosed to form an air channel for air circulation.
In one embodiment, the magnetic assembly further comprises a bobbin for winding the winding, the bobbin being located between the winding post and the winding.
In one embodiment, the bobbin has a hollow-out portion, the hollow-out portion at least partially corresponds to the first groove, and the air flow flowing through the first groove is in contact with the winding through the hollow-out portion, so that the air flow simultaneously helps the magnetic core and the winding to dissipate heat.
In one embodiment, the magnetic assembly further comprises a heat transfer element, the heat transfer element is arranged on the bobbin and at least partially corresponds to the first groove, and the heat transfer element is used for dissipating heat of the winding into the first groove.
In one embodiment, the heat transfer element is located between the bobbin and the winding, or between the bobbin and the winding post.
In one embodiment, the winding post comprises a winding installation part and magnetic end plates arranged at two ends of the winding installation part, and the first groove is arranged between the winding installation part and the magnetic end plates and penetrates through the winding installation part and the magnetic end plates;
the radial sectional area of the first groove is 5% -30% of the radial sectional area of the winding mounting portion.
In one embodiment, the number of the first grooves is at least two, and at least two of the first grooves are uniformly distributed on the periphery of the wrapping post, or at least two of the first grooves are uniformly distributed within a certain angle range of the periphery of the wrapping post.
In one embodiment, the radial cross-sectional shape of the first groove is semicircular, semi-elliptical, square, trapezoidal or a straight-line and arc splicing shape.
In one embodiment, the magnetic core further comprises a connecting post which forms a closed magnetic circuit with the winding post, at least one second groove which penetrates through the connecting post along the axial direction is formed in the outer wall of the connecting post, and the second groove is used for air flow circulation.
In one embodiment, the number of the second grooves is at least two, and at least two of the second grooves are uniformly distributed on the periphery of the connecting column, or at least two of the second grooves are uniformly distributed in a certain angle range of the periphery of the connecting column.
In one embodiment, the radial cross-sectional shape of the second groove is semicircular, semi-elliptical, square, trapezoidal or a straight-line and arc-line splicing shape.
A power module comprising a fan and a magnetic assembly as claimed in any preceding claim, the fan being located at an end of the magnetic assembly.
In one embodiment, the number of the magnetic assemblies is at least two, at least two of the magnetic assemblies are arranged along the axial direction, and the first grooves of the magnetic assemblies are correspondingly arranged to form a consistent first through air duct.
In one embodiment, the second groove of each magnetic assembly is also correspondingly arranged along the axial direction to form a uniform second through ventilation channel.
After the technical scheme is adopted, the utility model discloses following technological effect has at least:
the utility model discloses a magnetic component and have this magnetic component's power module sets up the first recess that link up along the axial direction at the outer wall of the wrapping post of magnetic core to, enclose between the inner wall of this first recess and the inner wall of winding and establish into the passageway that the air feed circulated. The heat inside the winding and the heat inside the magnetic core can be taken away when the external air flow flows in the first groove, so that the winding can be cooled through the outside or the inside, the heat dissipation effect of the winding and the magnetic core is ensured, the temperature of the winding and the magnetic core is reduced, the overall temperature of a magnetic assembly is reduced, and the reliable and efficient operation of the power module is further ensured.
Drawings
Fig. 1 is a perspective view of a magnetic assembly according to a first embodiment of the present invention;
FIG. 2 is a perspective view of a core of the magnetic assembly shown in FIG. 1;
FIG. 3 is a perspective view of a bobbin in the magnetic assembly of FIG. 1;
FIG. 4 is an exploded view of the magnetic assembly shown in FIG. 1;
FIG. 5 is an axial cross-sectional view of the magnetic assembly shown in FIG. 1;
fig. 6 is a perspective view of a magnetic assembly according to a second embodiment of the present invention;
FIG. 7 is a perspective view of a core of the magnetic assembly shown in FIG. 6;
FIG. 8 is an exploded view of the magnetic assembly shown in FIG. 6;
fig. 9 is a perspective view of a magnet assembly according to a third embodiment of the present invention;
FIG. 10 is a perspective view of a core of the magnetic assembly shown in FIG. 9;
fig. 11 is a perspective view of a magnet assembly according to a fourth embodiment of the present invention;
FIG. 12 is a perspective view of a core of the magnetic assembly shown in FIG. 11;
FIG. 13 is an exploded view of the magnetic assembly shown in FIG. 11;
fig. 14 is a perspective view of a magnet assembly according to a fifth embodiment of the present invention;
FIG. 15 is a perspective view of a core of the magnetic assembly shown in FIG. 14;
FIG. 16 is an exploded view of the magnetic assembly shown in FIG. 14;
fig. 17 is a perspective view of a sixth embodiment of the present invention with at least two magnetic assemblies arranged axially.
Wherein:
100-a magnetic component;
110-a magnetic core;
111-wrapping posts;
1111-a first groove;
1112-a winding mount;
1113-magnetic end plate;
112-connecting column;
1121 — a second groove;
120-winding;
130-a winding framework;
131-hollowed-out.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following embodiments are described in detail with reference to the accompanying drawings, and the magnetic component and the power module having the magnetic component of the present invention are described in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1, 6, 9, 11, and 14, the present invention provides a magnetic assembly 100. This magnetic component 100 is mainly applied to various switching power supplies, such as the power module of the present invention, of course, the magnetic component 100 can also be applied to power equipment. The utility model discloses a magnetic component 100 can dispel the heat through inside, reduces the inside temperature of magnetic component 100 to reduce magnetic component 100's bulk temperature, and then guaranteed power module's reliable, high-efficient operation.
Referring to fig. 1 and 2, in one embodiment, a magnetic assembly 100 includes a magnetic core 110 and a winding 120. The core 110 includes at least one winding leg 111. The winding 120 is wound around the outer circumference of the winding post 111. At least one first groove 1111 is formed in the outer wall of the winding post 111 and penetrates in the axial direction, and an air duct for air flow is formed by the inner wall of the first groove 1111 and the inner wall of the winding 120 opposite to the first groove 1111. The winding 120 has a hollow cross section, and the winding 120 may be sleeved on the winding post 111. Moreover, after the winding post 111 is wrapped by the winding 120, the heat of the winding post 111 and the heat of the contact position of the winding post 111 and the winding 120 cannot be dissipated, which may cause the local temperature of the magnetic component 100 to be too high, and in a severe case, the magnetic component 100 may be burned down. Therefore, the magnetic assembly 100 of the present invention has at least one first groove 1111 formed on the winding post 111. The first groove 1111 penetrates the winding post 111 in an axial direction of the winding post 111, and the first groove 1111 is located at an outer circumference of the winding post 111. The inner wall of the first recess 1111 and the inner wall of the opposite winding 120 enclose an air channel for the air flow. It should be noted that the axial direction herein refers to the extending direction of the length of the winding post 111, and is perpendicular to the radial direction, as shown in fig. 2.
The inner wall of the first recess 1111 can dissipate heat generated when the winding post 111 operates, and the inner wall of the winding 120 can also dissipate heat generated when the winding 120 operates. And, this heat can enter into the wind channel, and when the air current flowed to the other end from the one end of wrapping post 111 along axial direction, the air current can flow through the wind channel, carries out the heat exchange with the inner wall of winding 120 and the inner wall of first recess 1111, takes away the heat that winding 120 gived off and the heat that wrapping post 111 gived off, and simultaneously, the heat of winding 120 can also gived off through the surface of winding 120. Thus, when the airflow continuously flows along the axial direction, the heat of the winding post 111 and the interior of the winding 120 can be continuously dissipated, so as to reduce the temperature of the winding 120 and the magnetic core 110 and ensure the heat dissipation effect of the winding 120 and the magnetic core 110.
Alternatively, the winding 120 may be made of copper wire, aluminum wire, or other conductor. In order to ensure insulation on the surface of the winding 120, an insulating layer is provided (for example, wrapped) on the outer surface of the winding forming the winding 120. Still alternatively, the insulating layer may be an insulating film (e.g., a polyester/polyimide insulating layer). Alternatively, the radial sectional shape of the winding post 111 may be circular, elliptical, polygonal, or the like.
After the magnetic component 100 of the above embodiment is adopted, the heat inside the winding 120 and the heat inside the magnetic core 110 can be taken away when the external air flow flows in the first groove 1111, so that the winding 120 can be cooled through the outside or the inside, the heat dissipation effect of the winding 120 and the magnetic core 110 is ensured, the temperature of the winding 120 and the temperature of the magnetic core 110 are reduced, that is, the overall temperature of the magnetic component 100 is reduced, and the reliable and efficient operation of the power module is further ensured.
In one embodiment, the magnetic assembly 100 further includes a bobbin 130 for winding the winding 120, the bobbin 130 being located between the winding leg 111 and the winding 120. That is, the winding 120 is indirectly mounted on the winding post 111, that is, a bobbin 130 is present between the winding post 111 and the winding 120, and the winding 120 is supported on the winding post 111 by the bobbin 130. Of course, in other embodiments of the present invention, the winding 120 may be directly mounted on the winding post 111.
Alternatively, the bobbin 130 may be an integral bobbin mounted to the winding post 111 for winding the winding 120. Of course, the bobbin 130 may also be at least two parts, and the at least two parts are mounted on the winding post 111 in a matching manner for winding the winding 120.
Referring to fig. 1 and 3, in an embodiment, the bobbin 130 has a hollow portion 131, and the hollow portion 131 at least partially corresponds to the first groove 1111, so that the air flowing through the first groove 1111 contacts the winding 120 through the hollow portion 131 to help the magnetic core 110 and the winding 120 dissipate heat. That is, the hollow portion 131 may partially correspond to the first groove 1111, or may completely correspond to the first groove 1111. At this time, the inner wall of the winding 120 may correspond to the first groove 1111 through the hollow portion 131, so that the air flow in the first groove 1111 may contact the inner wall of the winding 120 through the hollow portion 131 to reduce the temperature of the winding 120. In addition, the bobbin 130 may also perform a partial heat transfer function, heat of the winding 120 may be transferred to the first groove 1111 through the winding post 111, and when the airflow flows through the first groove 1111, the heat transferred by the bobbin 130 may be taken away, so as to further reduce the temperature of the winding 120.
Illustratively, the hollow portion 131 completely corresponds to the first groove 1111. Alternatively, the hollow portion 131 may be a through hole, which communicates the winding 120 and the winding post 111. Alternatively, the shape of the through hole may be circular, elliptical, polygonal, curved, a shape in which a straight line is joined to a curved line, or the like. Moreover, the number of the hollow portions 131 is plural, and the plural hollow portions 131 are arranged along the axial direction of the winding post 111. This can ensure the contact area between the winding 120 and the first recess 1111, and ensure the heat dissipation effect. Of course, in other embodiments of the present invention, there may be one hollow portion 131, and at this time, the length of one hollow portion 131 in the axial direction is matched with the length of the first groove 1111 in the axial direction.
In an embodiment, the magnetic assembly 100 further includes a heat transfer element disposed on the bobbin 130 and at least partially corresponding to the first groove 1111, and the heat transfer element is configured to dissipate heat of the winding 120 into the first groove 1111. The heat transfer member may partially correspond to the first grooves 1111, or may entirely correspond to the first grooves 1111. Thus, the heat of the inner wall of the winding 120 can be dissipated to the first groove 1111 through the heat transfer member, and when the airflow flows through the air duct, the heat dissipated to the first groove 1111 by the heat transfer member can be taken away, so as to reduce the temperature of the heat transfer member, and further reduce the temperature of the winding 120. The heat transfer member includes, but is not limited to, a heat conductive sheet, a heat conductive adhesive, and the like, and may be other members capable of transferring heat.
In one embodiment, the heat transfer element is located between the bobbin 130 and the winding 120, or between the bobbin 130 and the winding post 111. When the heat transfer member is located between the bobbin 130 and the winding 120, the heat of the inner wall of the winding 120 may be transferred to the bobbin 130 through the heat transfer member, and the heat may be dissipated into the first groove 1111 through the bobbin 130. When the heat transfer member is located between the bobbin 130 and the winding post 111, the heat of the inner wall of the winding 120 may be transferred to the heat transfer member through the bobbin 130, and the heat may be dissipated into the first groove 1111 through the heat transfer member.
Referring to fig. 1 and 2, in an embodiment, the winding post 111 includes a winding mounting portion 1112 and magnetic end plates 1113 disposed at two ends of the winding mounting portion 1112, and a first groove 1111 is disposed between the winding mounting portion 1112 and the magnetic end plates 1113. The winding mount 1112 is used for winding the winding 120, and the magnetic end plates 1113 are located at both ends of the winding mount 1112, so that the mounting position of the winding 120 can be restricted, and the winding 120 can be reliably mounted on the winding post 111. Further, the radial sectional area of first groove 1111 is 5% to 30% of the radial sectional area of winding mounting portion 1112. Thus, the inner wall area of the first groove 1111 can be ensured to increase the heat dissipation area of the winding post 111, thereby ensuring the heat dissipation effect of the winding post 111 and reducing the temperature of the winding post 111.
In an embodiment, the number of the first grooves 1111 is at least two, and at least two first grooves 1111 are uniformly distributed on the outer circumference of the winding post 111, or at least two first grooves 1111 are uniformly distributed within a certain angle range of the outer circumference of the winding post 111. That is, the at least two first grooves 1111 may be uniformly distributed on the outer circumference of the winding post 111, and of course, may be non-uniformly distributed on the outer circumference of the winding post 111. Of course, in other embodiments of the present invention, the number of the first grooves 1111 may be only one.
In one embodiment, the radial cross-sectional shape of the first groove 1111 is semicircular, semi-elliptical, square, trapezoidal, or a combination of straight and curved lines, etc. It should be understood that the radial cross-sectional shape herein refers to a cross-sectional shape of the first groove 1111 along the radial direction of the winding post 111, and the radial cross-sectional shape of the first groove 1111 is not limited in principle as long as it can facilitate the flow of the air stream. In this embodiment, the radial cross-sectional shape of the first groove 1111 is a semicircle. Of course, in other embodiments of the present invention, the radial cross-sectional shape of the first groove 1111 may also be a polygon, etc.
In one embodiment, the magnetic core 110 further includes a connection post 112 enclosing a closed magnetic circuit with the winding post 111. The connection post 112 is disposed on the outer periphery of the winding mount 1112.
As shown in fig. 1 to 5, in the first embodiment of the present invention, the magnetic core 110 includes a winding post 111 and a connection post 112, the winding post 111 is located in the middle region, and the connection post 112 is symmetrically disposed on both sides of the winding post 111 and connected to the magnetic end plate 1113 of the winding post 111. The winding 120 is wound around the bobbin 130 and is mounted on the winding post 111 through the bobbin 130. The winding post 111 has two first grooves 1111 disposed symmetrically, and the bobbin 130 has a hollow portion 131 corresponding to the two first grooves 1111. Thus, the air flow (e.g., blowing air by a fan, etc.) in the outside takes away the heat inside the winding post 111 and the winding 120 through the through air channel, so as to form heat exchange to reduce the temperature of the winding post 111 and the winding 120, and further reduce the temperature of the magnetic assembly 100. Fig. 3 shows that the bobbin 130 has a hollow portion 131 corresponding to the first groove 1111; fig. 2 shows that two first grooves 1111 are formed on the winding post 111; FIG. 4 shows an exploded view of the magnetic assembly 100; fig. 1 shows that the air flows into the air duct from the openings of the two first grooves 1111 at one end of the winding post 111; fig. 5 is an axial cross-sectional view of the magnetic assembly 100, and it can be seen from fig. 5 that when the air flows in the first groove 1111, the air contacts with the inner wall of the first groove 1111 and the inner wall of the winding 120 through the hollow portion 131, so as to reduce the temperatures of the winding post 111 and the winding 120. The first recess 1111 functions to significantly increase the contact area of the winding post 111 with the heat dissipating air flow by a slight adjustment of the shape of the magnetic core 110, thereby greatly enhancing the heat dissipating effect of the magnetic core 110, particularly the heat dissipating effect of the winding post 111.
As shown in fig. 6 to 8, in the second embodiment of the present invention, the magnetic core 110 is U-shaped, the winding 120 is wound on the edge of the U-shaped bottom, and the outer surface of the U-shaped bottom is provided with a first groove 1111 that cooperates with the inner wall of the winding 120 to form an air channel. Also, the number of U-shaped magnetic cores 110 is two, and the two magnetic cores 110 are disposed opposite to each other, and the magnetic assembly 100 is formed by winding the winding 120, as shown in fig. 6.
As shown in fig. 9 and 10, in the third embodiment of the present invention, the structure of the magnetic core 110 is completely the same as that of the second embodiment except that two first grooves 1111 are formed. In this embodiment, the first grooves 1111 are located on the bottom and side edges of the U shape and correspond to the inner wall of the winding 120. At this time, the three first grooves 1111 of one magnetic core 110 are disposed at 270 °. Thus, the heat dissipation area of the winding post 111 and the heat dissipation area of the inner wall of the winding 120 can be further increased, and the heat dissipation effect can be further improved.
As shown in fig. 11 to 13, in the fourth embodiment of the present invention, the magnetic core 110 is U-shaped, the two windings 120 are respectively wound on two sides of the U-shape, the outer surface of the U-shape side is provided with a first groove 1111, and the first groove cooperates with the inner wall of the windings 120 to form an air duct. Also, the number of the U-shaped magnetic cores 110 is two, the sides of the two magnetic cores 110 are correspondingly connected, and the two windings 120 are wound around the correspondingly connected sides, as shown in fig. 11. Of course, the first groove may be further formed on the upper and lower sides of the side of the U-shaped magnetic core (not shown), similar to fig. 10, which is not described again.
As shown in fig. 14 to 16, in a fifth embodiment of the present invention, at least one second groove 1121 penetrating along the axial direction is formed on the outer wall of the connecting column 112, and the second groove 1121 is used for air flow circulation. At least one second groove 1121 is disposed on the outer surface of the connection post 112, and the bottom of the second groove 1121 is disposed through, so that the outer wall of the winding 120 corresponding to the second groove 1121 can be exposed through the second groove 1121. Thus, when external airflow flows through the second groove 1121, the airflow can form heat exchange with the outer wall of the winding 120 in the second groove 1121, so as to further reduce the temperature of the winding 120 and ensure the heat dissipation effect of the winding 120.
In an embodiment, the number of the second recesses 1121 is at least two, and the at least two second recesses 1121 are uniformly distributed on the periphery of the connecting column 112. It is understood that the at least two second recesses 1121 may be symmetrically disposed on the two connecting posts 112, and of course, the at least two second recesses 1121 may also be non-uniformly distributed. In other embodiments of the present invention, the number of the second grooves 1121 may be only one.
In an embodiment, the radial cross-sectional shape of the second groove 1121 is semicircular, semi-elliptical, square, trapezoidal, or a straight-line and arc split. It should be understood that the radial cross-sectional shape herein refers to the cross-sectional shape of the second groove 1121 along the radial direction of the connecting column 112, and the radial cross-sectional shape of the second groove 1121 is not limited in principle as long as the airflow can be facilitated. In this embodiment, the radial cross-sectional shape of the second groove 1121 is a semicircle. Of course, in other embodiments of the present invention, the radial cross-sectional shape of the second groove 1121 may also be a polygon, etc.
As shown in fig. 14 to 16, in a fifth embodiment of the present invention, the structure of the magnetic core 110 is completely the same as that in the first embodiment, except that two second grooves 1121 are formed on the connecting column 112. After the second recess 1121 is provided, the number of heat dissipation channels of the magnetic assembly 100 can be increased to help the winding 120 further dissipate heat.
Referring to fig. 1, 6, 9, 11, 14 and 17, the present invention further provides a power module, which includes a fan (not shown) and the magnetic assembly 100 in any of the above embodiments, wherein the fan is located at an end of the magnetic assembly 100. The fan may be disposed at least one end of the magnetic component 100, and is configured to accelerate a flow speed of the airflow in the first recess 1111 and/or the second recess 1121 of the magnetic component 100, so as to ensure a heat dissipation effect. The utility model discloses a power module adopts behind the magnetic component 100 of above-mentioned embodiment, can reduce magnetic component 100's temperature, and then reduces power module's temperature, guarantees reliability, the high efficiency of power module work. And only one fan can be adopted to realize air cooling and heat dissipation of the magnetic assemblies 100.
In an embodiment, the number of the magnetic assemblies 100 is at least two, at least two magnetic assemblies 100 are arranged along the axial direction, and the first grooves 1111 of each magnetic assembly 100 are correspondingly arranged to form a consistent first through air channel. The power module may adopt at least two magnetic assemblies 100 to implement the required functions of the power source, at this time, the magnetic assemblies 100 are arranged along the axial direction, and the first grooves 1111 of the at least two magnetic assemblies 100 are penetrated together to form a consistent first penetrating air passage. In this way, the magnetic element far away from the fan can also achieve good heat exchange through the first through air channel to reduce the temperature of the magnetic assembly 100. As shown in fig. 17, in the sixth embodiment of the present invention, the number of the magnetic assemblies 100 is at least two, and are arranged in the axial direction.
In an embodiment, the second grooves 1121 of each magnetic assembly 100 are also disposed correspondingly in the axial direction to form a uniform second through ventilation channel. The second through air channel can increase the number of the heat dissipation air channels of at least two magnetic assemblies 100, so that the magnetic elements far away from the fan can further realize good heat exchange through the second through air channel to further reduce the temperature of the magnetic assemblies 100.
The technical features of the embodiments described above can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (14)
1. A magnetic assembly, comprising:
a magnetic core including at least one winding post; and
the winding is wound on the periphery of the winding post;
the winding structure comprises a winding post, a winding and a winding, wherein the outer wall of the winding post is provided with at least one first groove which is communicated along the axial direction, and the inner wall of the first groove and the inner wall of the winding opposite to the first groove are enclosed to form an air channel for air circulation.
2. The magnetic component of claim 1, further comprising a bobbin for winding the winding, the bobbin being positioned between the winding post and the winding.
3. The magnetic assembly according to claim 2, wherein the bobbin has a hollow portion, the hollow portion at least partially corresponds to the first groove, and the air flowing through the first groove is in contact with the winding through the hollow portion, so that the air flow simultaneously helps the magnetic core and the winding dissipate heat.
4. The magnetic component according to claim 2 or 3, further comprising a heat transfer element disposed on the bobbin and at least partially corresponding to the first groove, wherein the heat transfer element is configured to dissipate heat of the winding into the first groove.
5. The magnetic assembly of claim 4, wherein the heat transfer element is located between the bobbin and the winding or between the bobbin and the winding post.
6. The magnetic assembly of claim 1, wherein the winding post includes a winding mount and magnetic end plates disposed at opposite ends of the winding mount, the first recess being disposed between the winding mount and the magnetic end plates;
the radial sectional area of the first groove is 5% -30% of the radial sectional area of the winding mounting portion.
7. The magnetic assembly of claim 6, wherein the number of first grooves is at least two,
at least two first recess evenly distributed in the periphery of wrapping post, perhaps, at least two first recess evenly distributed in the certain angle within range of the periphery of wrapping post.
8. The magnetic assembly of claim 6 or 7, wherein the first groove has a radial cross-sectional shape that is semi-circular, semi-elliptical, square, trapezoidal, or a straight-line and arc-line splice.
9. The magnetic assembly according to claim 1, wherein the magnetic core further includes a connection post surrounding the winding post to form a closed magnetic circuit, and at least one second groove penetrating in the axial direction is formed in an outer wall of the connection post and is used for allowing air to flow through.
10. The magnetic component of claim 9, wherein the number of the second grooves is at least two, and at least two of the second grooves are uniformly distributed on the periphery of the connecting column, or at least two of the second grooves are uniformly distributed within a certain angle range of the periphery of the connecting column.
11. The magnetic assembly of claim 9 or 10, wherein the radial cross-sectional shape of the second groove is semi-circular, semi-elliptical, square, trapezoidal, or a straight-line and arc-line splice.
12. A power module comprising a fan and a magnetic assembly as claimed in any one of claims 1 to 11, the fan being located at an end of the magnetic assembly.
13. The power supply module according to claim 12, wherein the number of the magnetic assemblies is at least two, at least two of the magnetic assemblies are arranged along the axial direction, and the first grooves of the magnetic assemblies are correspondingly arranged to form a consistent first through air duct.
14. The power module as claimed in claim 13, wherein the second recess of each of the magnetic assemblies is also disposed correspondingly in the axial direction to form a uniform second through air passage.
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| CN201921759743.1U CN210467527U (en) | 2019-10-18 | 2019-10-18 | Magnetic assembly and power module with same |
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| CN201921759743.1U CN210467527U (en) | 2019-10-18 | 2019-10-18 | Magnetic assembly and power module with same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113096934A (en) * | 2021-04-06 | 2021-07-09 | 阳光电源股份有限公司 | Fill electric pile and magnetic component thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113096934A (en) * | 2021-04-06 | 2021-07-09 | 阳光电源股份有限公司 | Fill electric pile and magnetic component thereof |
| CN113096934B (en) * | 2021-04-06 | 2022-09-13 | 阳光电源股份有限公司 | Fill electric pile and magnetic component thereof |
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